The Audobon Society reports a precipitous decline in many bird species in the United States. Why are the birds disappearing? The proximate cause is habitat loss, but of course the root cause is indifference:

The Audubon Society portrait of common bird species in decline is really a report on who humans are. Let me offer a proposition about Homo sapiens. We are the only species on earth capable of an ethical awareness of other species and, thus, the only species capable of happily ignoring that awareness. So far, our economic interests have proved to be completely incompatible with all but a very few forms of life. It’s not that we believe that other species don’t matter. It’s that, historically speaking, it hasn’t been worth believing one way or another. I don’t suppose that most Americans would actively kill a whippoorwill if they had the chance. Yet in the past 40 years its number has dropped by 1.6 million.